Finding the Fourth Proportional to 143,564.99, 198,117.69 and 79,902.80
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Solution
The fourth proportional to 143,564.99, 198,117.69 and 79,902.80 is: 110,264.75
Step by Step Solution
- Step 1: Write the proportion equation
143,564.99 : 198,117.69 = 79,902.80 : x - Step 2: Convert to fraction form
143,564.99/198,117.69 = 79,902.80/x - Step 3: Cross multiply
143,564.99x = 198,117.69 × 79,902.80 - Step 4: Simplify right side
143,564.99x = 15,830,158,160.53 - Step 5: Solve for x
x = 15,830,158,160.53/143,564.99 - Step 6: Final answer
x = 110,264.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.